| Wednesday, August 16th, 1978 | Activated SP Luis Miranda from the disabled list. | Tuesday, August 8th, 1978 | Placed LF Robbie Bryant on the 15-day disabled list. | Tuesday, July 18th, 1978 | Activated LF Steve Howard from the disabled list. | Saturday, July 8th, 1978 | Placed SP Jim Mueller on the 15-day disabled list. | Monday, July 3rd, 1978 | Placed LF Steve Howard on the 15-day disabled list. | Friday, June 30th, 1978 | Activated CF Matt Miller from the disabled list. | Thursday, June 29th, 1978 | Activated SP Edgar Polledo from the disabled list. | Saturday, June 24th, 1978 | Placed RF Robert Vincent on the 15-day disabled list. | Wednesday, June 14th, 1978 | Placed SP Edgar Polledo on the 15-day disabled list. | Saturday, May 27th, 1978 | Placed SP Luis Miranda on the 15-day disabled list. | Sunday, May 21st, 1978 | Placed MR Julián Mata on the 15-day disabled list. | Thursday, May 4th, 1978 | Placed CF Matt Miller on the 15-day disabled list. | Wednesday, August 31st, 1977 | Signed Manager Rafael Valentín to a 3-year contract extension. | Signed Pitching Coach Albert Icaza to a 1-year contract extension. | Signed Hitting Coach José Ramírez to a 2-year contract extension. | |
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